BWC500-H Containerized Brackish Water Reverse Osmosis System
In medium-to-large water-consuming scenarios where brackish water reserves are abundant but fresh water resources are scarce, highly integrated and efficient desalination equipment is crucial for ensuring stable water supply. The FENIGAL BWC500-H Containerized Brackish Water Reverse Osmosis System, with a 40-foot standardized container as its carrier, integrates high-performance desalination components and an intelligent control unit. Relying on large capacity, low energy consumption, and strong adaptability, it provides large-scale brackish water desalination solutions for scenarios such as towns, large agricultural bases, and industrial parks.
As a dedicated containerized model for medium-to-large-scale brackish water desalination in the Desal BWC series, the BWC500-H integrates all core modules (pretreatment system, reverse osmosis unit, chemical cleaning and dosing system, electrical control system, etc.) into one 40-foot standardized container. No additional workshops need to be built, significantly reducing on-site construction work and land occupation costs. Its design is based on the working condition of "4,000 ppm, 20°C brackish water", with a rated daily fresh water output of 528 cubic meters (calculated based on a rated water production flow rate of 22 m³/h and 24-hour daily operation). This capacity can meet the daily drinking water needs of approximately 2,500 people, or support thousand-acre-level agricultural irrigation and medium-sized industrial production water demand.
High-Efficiency Integration and Rapid Commissioning: Over 90% of component installation, pipeline connection, and commissioning work is completed in the factory. On-site operations only require connecting water inlet, power supply, and drainage interfaces, greatly shortening the cycle from equipment delivery to commissioning and avoiding the lengthy construction of traditional decentralized systems.
Strong Corrosion Resistance and Durability: High-pressure pipelines and fittings are made of Sch10 SS316 stainless steel; the container frame and inner wall are coated with heavy-duty marine anti-corrosion paint; wet-area components are made of corrosion-resistant materials such as duplex steel, SS904L, or UPVC. These designs enable the system to withstand brackish water erosion for a long time, extending the equipment's service life to more than 10 years.
Low Energy Consumption and Controllable Costs: Equipped with a high-efficiency high-pressure pump, IE3-class energy-saving motor, and low-energy reverse osmosis membrane, the energy consumption per unit of water production is only 1.04 kWh/m³, which is more than 15% lower than the average energy consumption of similar medium-to-large brackish water desalination equipment in the industry, significantly reducing long-term operating costs.
Three-Stage Filtration and Membrane Protection: Adopting a three-stage filtration process of "sand filter + pre-filter + main filter", it can effectively trap particulate impurities, colloids, and microorganisms in brackish water, avoiding wear of the high-pressure pump and pollution of the reverse osmosis membrane, and ensuring stable operation of the system.
Flexible Maintenance and Rapid Recovery: Core components use standardized universal models; in case of failure, the system can be quickly restored to operation by replacing parts. At the same time, it supports remote data collection and fault early warning (sensors can be upgraded on demand), reducing the cost of manual inspection.
The BWC500-H uses a mature reverse osmosis (RO) core process to achieve efficient desalination of brackish water through a complete process of "water intake - pretreatment - high-pressure desalination - produced water storage - membrane maintenance". The specific steps are as follows:
Water Intake and Storage: Brackish water is pumped by an Intake Pump and sent to a Feed Tank for temporary storage to balance the inlet water flow and pressure, avoiding the impact of inlet water fluctuations on subsequent processes.
Pretreatment and Purification:
The Feed Pump pressurizes the water, and at the same time, Poly Aluminium Chloride (PAC) is dosed for impurity flocculation, and Sodium Hypochlorite (NaClO) is dosed to kill microorganisms in the water.
The water flows through a Sand Filter to filter particulate impurities with a particle size larger than 10 μm (the Sand Filter can be omitted if the inlet water turbidity is less than 0.3 NTU).
Sodium Bisulfite (NaHSO₃) is dosed to remove residual chlorine in the water (to prevent oxidation of the reverse osmosis membrane), and an Anti-scalant is dosed to inhibit scaling of calcium and magnesium ions. Finally, the water passes through a Safety Filter (with a precision of 5 μm) to trap tiny impurities, providing a final protection for the reverse osmosis membrane.
Reverse Osmosis Desalination: The High-Pressure Pump (HPP) pressurizes the pretreated water to 20 barg (maximum system pressure) and sends it to the 8040-type reverse osmosis membrane module. Driven by pressure, water molecules pass through the membrane to form fresh water, while the concentrated water with high salinity is discharged through a pressure relief valve.
Product Water and Membrane Maintenance: Fresh water is stored in a Product Tank and transported to water points as needed; the system is equipped with a Cleaning in Place (CIP) device (including a CIP tank, CIP pump, and filter), which can regularly perform chemical cleaning on the reverse osmosis membrane to restore membrane flux and desalination efficiency.
The following parameters are designed based on "4000 ppm, 20℃ brackish water". The data table is as follows:
| Technical Parameter | Unit | BWC500-H Configuration | Remarks |
|---|
| Rated Product Flow | m³/h | 22 | Corresponding to a daily output of 528 m³; if the inlet water TDS is lower than 4,000 ppm, the output can be increased by 5%-10% |
| Rated Product Flow | L/S | 6.11 | - |
| Rated Recovery Rate | % | 70 | 70% of the inlet water is converted into fresh water, and 30% is discharged as concentrated water; the recovery rate can be customized and adjusted according to the inlet water quality |
| Rated Feed Flow | m³/h | 31.43 | Calculated to match the recovery rate, ensuring stable operation of the reverse osmosis membrane |
| Maximum System Pressure | barg | 20 | Normal operating pressure must be higher than this value; versions with higher pressure can be customized for high-TDS (>5,000 ppm) inlet water scenarios |
| RO Membrane Specification | inch | 8040 | Industry-standard membrane type, easy to replace, compatible with mainstream brand membrane elements |
| Quantity of RO Membranes | pcs | 25 | Membrane modules adopt a "multi-group parallel + series" design to balance water production and desalination efficiency |
| Dry Weight of Equipment | ton | 12 | Does not include operating water in the system, facilitating sea transportation, land transportation, and on-site hoisting (a crane of 12 tons or more is required for matching) |
| Container Size | ft | 40 | Standard 40-foot container (length 12.19m × width 2.44m × height 2.59m), compatible with general transportation tools |
| Rated Power (Core Equipment) | kW | 23 | Includes power of feed pump, high-pressure pump, CIP pump, and dosing pump; excludes power of intake pump, product water transfer pump, and air conditioner |
| Energy Consumption per Unit Product Water | kWh/m³ | 1.04 | Low-energy design, saving more than 15% energy compared with traditional similar equipment |
| Installed Power (Including Auxiliary Equipment) | kW | 37.2 | Includes power of core equipment + lighting + control cabinet; a three-phase power supply line of ≥40 kW is required for matching |
| Power Input | - | 3PH, 380VAC±10%, 50Hz | Three-phase AC power; versions with 220V/480V voltage and 60Hz frequency can be customized according to regional needs |
BWC500-H has clear restrictions on the quality of influent water. If it exceeds the specified range, additional pre-treatment is required. The effluent fully complies with WHO drinking water standards. The specific parameters are as follows:
| Category | Indicator | Requirement | Remarks |
|---|
| Feed Water Standards | Salinity (TDS) | 1,000-5,000 mg/L | Contact the manufacturer for customized pretreatment solutions (such as adding nanofiltration pretreatment) if the range is exceeded |
| Temperature | 5-35°C | A heating device is required if the temperature is <5°C, and cooling is required if the temperature is >35°C to avoid affecting membrane flux and service life |
| Turbidity | ＜40 NTU | Additional pretreatment such as a sedimentation tank + multi-media filtration is required if turbidity >40 NTU |
| Chemical Oxygen Demand (COD) | ＜10 mg/L | Prevents organic matter from depositing on the membrane surface, causing membrane pollution and blockage |
| Ferrous (Fe²⁺) | ＜0.1 mg/L | Avoids the formation of hydroxide precipitates on the membrane surface after iron ion oxidation |
| Manganese (Mn²⁺) | ＜0.1 mg/L | Same as ferrous ions, prevents membrane scaling |
| Oil and Grease | 0 mg/L | Grease can permanently damage reverse osmosis membranes; it is necessary to ensure no oil pollution before water intake |
| Product Water Standards (Drinking Water) | Salinity (TDS) | ＜500 mg/L | Meets the standards of WHO "Guidelines for Drinking Water Quality" (4th edition, 2012) |
| pH Value | 6-8 | A pH range suitable for human drinking, no additional adjustment is needed for direct drinking |
| Turbidity | ＜0.2 NTU | Clear and transparent water quality, no visible suspended impurities |
BWC500-H has large production capacity and strong adaptability, and can cover a variety of medium and large brackish water desalination demand scenarios:
Towns and Small Cities: Provides large-scale drinking water for remote towns lacking municipal water supply, replacing high-cost fresh water transfer.
Large Agricultural Planting Bases: Treats underground brackish water to provide fresh water that meets irrigation standards for cash crops such as cotton, fruits, and vegetables, improving crop yield.
Industrial Parks: Provides production water for industries such as chemical engineering and electronics, or treats industrial circulating water discharge (brackish water type) to realize water resource recycling.
Golf Courses and Resorts: Meets the landscape water, irrigation water, and domestic water needs of large-scale leisure and entertainment facilities, suitable for coastal or inland brackish water areas.
Mining Areas and Energy Bases: Provides stable fresh water for employee living areas in remote mining areas and power plant cooling systems, ensuring the normal operation of production and life.
The BWC500-H model and supporting kit codes are clearly marked, facilitating accurate purchasing:
| Item | Specific Content | Description |
|---|
| System Model | BWC500-H | Containerized brackish water reverse osmosis system, 40-foot container specification |
| System Code Number | 204A107 | Unique internal identifier of the manufacturer, used for order confirmation, production tracking, and after-sales docking |
| Filter Kit Code Number | 244P007 | Includes filter elements of all levels (including safety filter and CIP filter elements) for 1 year of use; additional procurement is required if the inlet water contains many impurities |
| Insulation Kit Code Number | 254P007 | Includes container insulation layer (50mm thickness) and industrial air conditioner, suitable for environments of -10℃-45℃, avoiding temperature affecting membrane efficiency |
If the equipment operates in strict accordance with the specifications in the Operation Manual for BWC Series Brackish Water Desalination System, the manufacturer provides a dual warranty guarantee:
Warranty Period 1: A 12-month warranty from the date when the system passes on-site commissioning and the acceptance report is signed.
Warranty Period 2: A maximum 18-month warranty from the date of equipment delivery (whichever expires first).
Warranty Scope: Covers quality issues of core equipment (high-pressure pump, reverse osmosis membrane, control cabinet), excluding component damage caused by excessive inlet water quality or improper operation.
For inquiries about technical details (such as inlet water quality adaptation and capacity customization), obtaining quotations, or procurement, please contact us through the following methods:
Landline: +86 0510 85163211
Mobile Phone: +86 13646187144
Address: Room 511, Block B, 100 Dicui Road, Binhu, Wuxi, Jiangsu, China
Official Website: www.fgwater.com
E-mail: [email protected]
For more products, please visit: https://www.fgwater.com/Containerized-Water-Purification-System/
PDF manual download address:Desal BWC series Containerized BWRO system